# NTSB FTW90DPJ11: Dooley Mustang MII, N7015A, Cashion, OK, September 15, 1990

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Final report
- Date: September 15, 1990, 08:10 local (13:10 UTC)
- Place: Cashion, OK
- Coordinates: 35.479942, -97.539253 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=35.4799&lon=-97.5393&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report November 23, 1992
- Report: Approved by Office Director
- NTSB case key (mKey): 22960
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW90DPJ11
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/22960/pdf
- Page: https://openairdocs.org/ntsb/FTW90DPJ11

## Probable cause

THE SEPARATION OF A 14 INCH SECTION OF ONE PROPELLER BLADE DUE TO PREVIOUS DAMAGE.

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Airframe/component/system failure/malfunction, cruise - normal
  - propeller system/accessories,blade - failure,total (cause)
  - propeller system/accessories,blade - previous damage (contributing factor)
- Forced landing, descent - emergency
- Nose over, landing - flare/touchdown
  - terrain condition - soft

## Analysis

AT 5,500 FEET ONE BLADE OF THE TWO BLADE PROPELLER FAILED, RESULTING IN SEPARATION OF A 14 INCH SECTION OF THE BLADE. THE PILOT THEN SECURED THE ENGINE AND PERFORMED A FORCED LANDING IN A RIVER BED. TOUCHDOWN WAS TAIL FIRST AND WHEN THE MAIN GEAR CONTACTED THE SAND THE AIRPLANE NOSED OVER. THE PROPELLER LOG BOOK COULD NOT BE LOCATED, HOWEVER, THE PILOT ESTIMATED PROPELLER TOTAL TIME TO BE ABOUT 405 HOURS. EXAMINATION REVEALED AT LEAST THREE CRACK ZONES ON THE FRACTURE SURFACE FROM PREVIOUS UNDOCUMENTED DAMAGE.

## Aircraft

- Registration: [N7015A](https://openairdocs.org/deregistered/N7015A-2002-08-08), registration cancelled 2002-08-08, S/N 1408, built 1988 (OpenAirDocs)
- Reported make and model: DOOLEY MUSTANG MII (MUSTANG MI)
- Registry model: [Dooley James H MUSTANG M II](https://openairdocs.org/model/dooley-james-h-mustang-m-ii) (registry code 1690477) (OpenAirDocs)
- Registry engine: [Continental IO-346 series](https://openairdocs.org/engine/continental-io-346-series) (registry code 17033, reciprocating) (OpenAirDocs)
- Category: Airplane, amateur-built
- Serial number: 1408
- Airframe hours: 154
- Engines: CONTINENTAL IO-346-A 165 horsepower reciprocating
- Damage: Destroyed
- Flight: Personal, Part 91
- Operator: Brewer, Brian S.
- Registered owner: Brian S. Brewer
- Airworthiness certificate: Special, Experimental (Special)
- Last inspection: Annual, November 6, 1989, 52 hours before
- Departed: F29, OKLAHOMA CITY, OK
- Destination: PNC, PONCA CITY, OK

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 30; private; airplane ratings: single-engine land, multi-engine land; medical: class 3, valid medical--no waivers/lim.; seat: left; flight hours: 1,038 total, 29 in this make and model, 1,000 as pilot in command, 15 in the last 90 days, 10 in the last 30 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 360° at 3 knots
- Visibility: 30 statute miles
- Lowest ceiling: none
- Temperature: 64 °F, dew point -0 °F

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19900915039849A](https://openairdocs.org/incident/19900915039849A), Sep 15, 1990: Amtrbb MUSTANG2, Crescent, OK, Destroyed. Propeller blade broke off in flight. Landed in dry river bed and flipped over.

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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